Hose coupling



HOSE COUPLING Filed Dec. 28. 1940 ya j@ the end of the hose PatentedNov. 3, 1942 UNITED STATES PATENT OFFICE HosE COUBLING Arthur L. Parker,cleveland, ohio Application December 28, 1940, Serial No. 372,158

Claims.

The present invention relates to new anduseful improvements in couplingsfor joining fluid conduits, and more particularly to improvements in acoupling for connecting hose sections to various types of conduits.

According to the present invention, the coupling generally includes aclamping assembly for one end of the hose section. This clamping'assembly has associated therewith an inner tubular portion on which theend of the hose section is placed and against which the hoseiis clamped.This tubular portion extends beyond the clamping assembly and is adaptedtobe clamped in communication with a suitable conduit so thatcommunication between the hose section and the conduit is affordedthrough the tubular portion.

An object of the present invention is to provide a coupling of the abovetype which is constructed and arranged so that the hose section can bequickly connected to a conduit without twisting either the conduit orthe hose section.

A further object of the invention is to provide a coupling of the abovetype wherein a tubular member affording communication between the hosesection and the connected conduit is adapted to be clamped incommunication with the conduit by means which eliminates the hecessityof twisting either the conduit or the hose section.

A still further object of the invention is to provide a coupling of theabove type which is simple in construction and which affords fluid tightcommunication with a minimum number of parts.

end of the hose. The sleeve member I3 may also be provided with a wrenchengaging'portion I1.

A clamping member in the form of a ysleeve I8 is threadedly connected tothe outer threads I5 on the sleeve member I3 and is provided at the freeend thereof with an inwardly directed portion I9 having an inclinedinner camming surface 20. lWhen the sleeve members I3, I8 .are tightenedrelative to one another, the camming surface 20 is adapted to engage oneedge of a split clamping ring 2 I, the opposite edge of which abutsagainst the end of the sleeve member I3. Thus, tightening of the sleevemembers I3, I8 will effect a tight clampingof the hose` against thetubular member .by the clamping ring 2| but clamping movement of thesleeve I8 is limited so as to prevent excessive contraction of the ringI2| and resultant damage to the hose@ The inner threads I4 on the sleevemember I3 are for the purpose of providing an additional grippingsurface between the clamping assembly and the hose in that compressionof the hose by the clamping ring 2| will tend to force the hose materialinto engagement with the threads I4.

A s1eeve 22 surrounds the tubular member II and is provided at .one endthereof with an outwardly directed' ange 23. which is disposed betweenthe inner'end of the hose I0 and the inner surface of the shoulder I6 onthe sleeve member I3. The opposite end of the sleeve 2,2 is providedwith an outwardly directed head or The above and other objects of theinvention shoulder portion 24 which is provided with a more fullypointed out.

In the accompanying drawing:

Figure 1 is a longitudinal section showing one form of coupling with thehose section secured in communication with a conduit.

Figure 2 is a similar longitudinal section showing a modified form ofcoupling.

' Figure 3 is a similar longitudinal section showing a still furthermodication.

Referring more in detail to theaccompanying drawing, and particularly toFigure l, one end of a flexible hose I0 is placed over one end of atubular member Il, the opposite end of which extends beyond the end ofis provided with an outwardly ared end portion I2. A sleeve member I3 isdisposed around ternal and external threads I4, I5, respectively,

Y will in part be obvious and will be hereinafter 40 which is incommunication with the tubular member II and with the hose section I0.The adapter 26 may be provided with external threads 21 for connectionwith a suitable iiuid conduit. The adapter 26 is also provided withexternal threads 28 which are adapted to threadthe hose and 24 on thesleeve 22.

I0 and is provided with inedly engage internal threads on a clamping nutmember 29. The nut member 29 is provided with an inwardly directedshoulder 3Il which is adapted to engage the shoulder or head portion Theadjacent end of the adapter ing surface 3| against which the innersurface of the ared end I2 of the tubular member II" is adapted -to beclamped when the nut member and with an inwardly extending radialshoulder 29 is tightened relative to the adapter 26.

26 is provided with an inclined clampsleeve v2a terminates short I -butis provided with the head or shoulder porextending annular. flangeadapter 26 by tightening the nut 2l relative to the adapter. There is ametal to metal contact between the shoulders 24 and 3l so that the nut29 can be tightened without turning or twisting of the hose I or theadapter-2i. The ilange 23 on the sleevev 22, being disposed within -theshoulder I6 on the sleeve member Il, serves to prevent separation of theclamping assembly for the hose section and also the clamping assemblyfor the end of the tubular member II.

In the modified form of the invention shown in Figure 2, the tubularmember I Ia is formed integral with the inwardly directed shoulder ISaon the sleeve member lia. The sleeve member I8 threadedly engages theouter threads I5a on the sleeve member Ila and the inner threads on thesleeve member I aare omitted in this form A ofthe invention. Tlghteningof the sleeve members I8, I3a relative to one another will e'ectclamping of the hose between the clamping ring 2| and the adjacentportion 'of the tubular member I I a. Since the tubular portion IIa isformed integral with the shoulder lia, the intermediate of the shoulderIia tion 24a ywhich is clamped by the shoulder 3l on the nut 29,. asdescribed in connection with the form of the invention shown inFigure 1. The flared -end I2a of the tubular member IIa is -clampedbetween the inclined surfaces at the end of the adapter 26 and the headmember 24a.

In the form of the invention shown in Figure 3, the tubular member IIbis shaped intermediate the ends thereof to provide an outwardly 32 whichis disposed between the inner end' of shoulder IIb on the sleeve memberI3b. The iared -end I 2b of the tubular member I Ib is clamped betweenthe inclined surfaces on the adapter and on the head portion 24a, asdescribed in connection with Figure 2. 'Ihe tubular member IIb isseparate from the sleeve member- |311 but the fiange 32 and the clampedend I2b serve to prevent separation of the hose from the conduit whichmaybe secured to the adapter 26.

From the foregoing description, it will be seen that the presentinvention provides a highly eficient coupling for clamping a ilexiblehose section to another iluid conduit. The clamping means for the end ofthe flexible hose includes a tubular portion which may be integral withthe clamping means .or separate therefrom. 'Ihe the hose Il and theatubular member within the hose section against hose is clamped againstthe outer surface of the tubular'portion which provides iluidcommunication between the hose and an adapter which may be connected toanother fluid conduit. One' end of the tubular portion extends outsideof the -hose clamping means and is clamped in engage, ment with theconduit adapter. yThe clamping.

means for the hose and the clamping means for the outwardly extendingend of the tubular portion are prevented from separating in the variousways illustrated. The clamping nut for clamping the flared end of thetubular portion within which the end of relative to the intermediatesleeve and It is to be clearly understood that minor changes in thedetails of construction and arrangement of parts may be made withoutdeparting from the scope'of the invention as set forth in the appendedclaims. t

I claim:

1. A coupling for joining a hose section to a fluid conduit comprising asleeve member within which the end of the hose section is inserted, saidsleeve member having an inwardly directed portion adjacent the inner endof the hose-section,

` ing the hose section against the tubular portion,

a clamping sleeve surrounding the flared end *of the tubular portion andhaving a tapered clamping surface engaging the outer face of theiiax'edV end of the tubular portion, the inner face of the ilared end ofthe tubular portion being adapted to abut against a tapered clampingsurface on the fluid conduit to which'the hose is attached and aclamping nut engaging said iiuid conduit and having an inwardly directedshoulder engaging the shoulder on the clamping sleeve for clamping theared end of the tubular portion between said clamping surfaces.

2'. A coupling for joining a hose section to another iluid conduit,comprising a sleeve member vwithin which the end of the hose section isadapted to be insertedv and said sleeve member having an inwardly4directed flange adjacent the inner end of the hose section, meansproviding a tubular portion disposed within said iiange and extendingwithin the' hose section and against which the hose section is adaptedto be clamped, said tubular portion extending outwardly beyond theflange and the hose section and having an outwardly flared end, meanscooperating with said sleeve member for clamping the hose section, aclamping sleeve surrounding the outer surface of the ilared end of saidtubular portion and having a tapered clamping surface engaging the outersurface of the ilared end of the tubular portion and having at theopposite end thereof an outwardly directed shoulder, the inner surfaceof the -iiared end of said tubular portion being adapted to abut againsta surface on the other iluid conduit, and a clamping nut engaging thesaid other iluid conduit and having an inwardly directed shoulderengaging the shoulder on said clamping sleeve for clamping the aredendof the tubular portion between said clamping surfaces and theengagement between said shoulders serving to prevent turning or twistingof the hose section during clamping of the flared end ofV the tubularportion.

3. A coupling for joining a hose section to another iiuid conduit,comprising a sleeve member l the hose section is adapted to be clampedand said sleeve member having an inwardly directed ange adjacent theinner end of the hose section, means providing a tubular portionintegral with the flange on said sleeve member and extending within thehose section, said tubular portion extending beyondthe end of the hosesection and the flange and having tapered clampingV an outwardly iiaredend, a clamping sleeve surrounding the outer surface of the ared end ofsaid tubular portion and having a tapered clamping surface engaging theouter surface of the flared end of the tubular portion and having at theopposite end thereof an outwardly directed shoulder, the inner surfaceof the ared end of said tubular portion being adapted toabut against atapered clamping surface on the other iiuid conduit, and a clamping nutengaging the said other fluid conduit and having an inwardly directedshoulder engaging the shoulder on said clamping sleeve for clamping theared end of the tubular portion between said clamping surfaces and theengagement between said shoulders servhaving an inwardly directedshoulder engaging' the shoulder on said clamping sleeve for lclampingthe flared end of the tubular portionbetween said clamping surfaces andthe engagement between said shoulders serving to prevent turning ortwisting of the hose section during clamping of the flared end of thetubular portion.

5. A coupling for joining a hose section to another uid conduit,comprising a sleeve member within which the end of the hose section isadapted to be clamped, said sleeve member having to prevent turning ortwisting of the hose section during clamping of the ared end of thetubular portion.

4. A couplingfor joining a hose section to another iiuid conduit,comprising a sleeve member within which the end of the hose member isadapted to be clamped and said sleeve member having an'inwardly directedflange adjacent the inner end of the hose section, means providing atubular portion within said ange and extending within the hose section,said tubular portion extending beyond the flange and the hose sectionand having an outwardly ared end, said tubular portion being folded uponitself to provide an annular ring extending outwardly and disposedbetween said ange andthe end of the hose section, a clamping sleevesurrounding the outer surface of the flared end of said tubular portionand having a tapered clamping surface engaging the outer surface of theflared end of the tubular portion and having at the opposite end thereofan outwardly directed shoulder, the inner surface of the flared end ofsaid tubular portion being adapted to abut against a tapered clampingsurface on `the other uid conduit, and a clamping nut engaging the saidother uid conduit and ing an inwardly directed ange adjacent the innerend of the hose section, an'independent tubular member located withinsaid flange and extending within the end of the hose section. saidtubular member extending outwardly beyond the flange and the hosesection andhaving an outwardly iiared end, a clamping sleeve surroundingthe outer surface of the ared end of said tubular member and having atone end thereof a tapered clamping surface engaging the outer surface ofthe :dared end of the tubular member and having at the opposite endthereof an outwardly directed shoulder disposed between the end ofthehose section and the ange on said sleeve member,`said clamping sleevehaving an outwardlydirected shoulder located intermediate the endsthereof,

the inner surface of the ared end of said tubular f,

member being adapted to abut against a tapered clamping surface on theother uid conduit, and a clamping nut engaging the said other huidconduit and' having an inwardly directed shoulder engaging theintermediate shoulder on said clamping sleeve for clamping the iiaredend of the tubular member between said clamping surfaces and theengagement between the intermediate shoulder on said clamping sleeve andthe shoulder on said clamping nut serving to prevent turningl ortwisting of the hose section' during clamping of the flared end of thetubular member.

' ARTHUR L. PARKER.

